https://w3id.org/framester/conceptnet5/data/en/grievous <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/cla/enm.greven> <https://w3id.org/framester/conceptnet5/cla/la.gravare> <https://w3id.org/framester/conceptnet5/cla/fro.grever> risorse dalla linked data cloud